Results 21 to 30 of about 6,278,898 (215)

Some properties of functions related to certain classes of completely monotonic functions and logarithmically completely monotonic functions

open access: yesFilomat, 2014
In this article, we establish several properties of the composition of functions which are related to certain classes of completely monotonic functions and logarithmically completely monotonic functions.
Cheung, WS, Guo, S, Srivastava, HM
openaire   +4 more sources

Logarithmically complete monotonicity properties and characterizations of the gamma function

open access: yesTamkang Journal of Mathematics, 2007
n this paper, the logarithmically complete monotonic properties of the functions $ \prod_{i=1}^{n}\frac{\Gamma(x-a_i)}{\Gamma(x-b_i)} $ ,$ \Gamma(x)^{\alpha}\Gamma\Big(x-\sum_{i=1}^n a_i\Big)/\prod_{i=1}^{n}\Gamma(x-a_i) $, and $ x^r(e/x)^x \Gamma(x) $ are obtained. Some characterizations of the gamma function are deduced.
Li, Ai-Jun, Chen, Chao-Ping
openaire   +3 more sources

Logarithmically complete monotonicity of a function related to the Catalan-Qi function [PDF]

open access: yesActa Universitatis Sapientiae, Mathematica, 2016
Abstract In the paper, the authors find necessary and sufficient conditions such that a function related to the Catalan-Qi function, which is an alternative generalization of the Catalan numbers, is logarithmically complete monotonic.
Qi Feng, Guo Bai -Ni
openaire   +3 more sources

A Completely Monotonic Function Involving Divided Difference of Psi Function and an Equivalent Inequality Involving Sum [PDF]

open access: yes, 2006
In this paper, a function involving the divided difference of the psi function is proved to be completely monotonic, a class of inequalities involving sum are founded, and an equivalent relation between the complete monotonicity and one of the class ...
Qi, Feng
core   +4 more sources

On a conjecture of a logarithmically completely monotonic function

open access: yes, 2016
In this short note we prove a conjecture for the interval $(0,1)$, related to a logarithmically completely monotonic function, presented in \cite{BG}. Then, we extend by proving a more generalized theorem. At the end we pose an open problem on a logarithmically completely monotonic function involving $q$-Digamma function.
Krasniqi, Valmir, Shabani, Armend Sh.
openaire   +2 more sources

Certain Logarithmically N-Alternating Monotonic Functions Involving Gamma and q-Gamma Functions [PDF]

open access: yes, 2005
In the paper, three basic properties of the logarithmically N-alternating monotonic functions are established and the monotonicity results of some functions involving the gamma and q-gamma functions, which are obtained in [W. E. Clark and M. E.
Qi, Feng
core   +3 more sources

A LOGARITHMICALLY COMPLETELY MONOTONIC FUNCTION INVOLVING THE GAMMA FUNCTION

open access: yesTaiwanese Journal of Mathematics, 2010
In this paper, sufficient conditions are found for a function involving the gamma function and its reciprocal to be logarithmically completely monotonic. Consequently, a decreasing monotonicity of the function is generalized and a known inequality is extended.
Qi, Feng, Guo, Bai-Ni
openaire   +2 more sources

Logarithmically complete monotonicity of reciprocal ARCTAN function

open access: yesKragujevac Journal of Mathematics
We prove the conjecture stated in F. Qi and R. Agarwal, On complete monotonicity for several classes of functions related to ratios of gamma functions, J. Inequal. Appl. (2019), that the function 1∕ arctan is logarithmically completely monotonic on (0,∞), but not a Stieltjes transform.
Jovanović, Vladimir, Treml, Milanka
openaire   +3 more sources

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

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